Spinal kyphotic alignment changes spinal movement strategy during lateral reaching motion while in a sitting position.
Taiki Morikawa, Hiroshi Katoh
PMID 32082028WHAT IT FOUND
Flexed sitting changed how young men moved their spine during seated rightward reaching.
Some thoracic side tilt and rotation were less, and lumbar rotation patterns shifted. Posture may alter trunk movement strategy.
Key findings
01In flexed sitting, left tilt of the T8 segment and right rotation of the T4 segment were lower than in normal sitting.
02In flexed sitting, L1 rotated right instead of left, and L5 rotated left more than in normal sitting.
03Front-to-back tilt of spinal segments did not show a significant difference between normal and flexed sitting.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
Only 19 healthy young adult men were tested, so the findings do not show what happens in older adults with kyphosis or in women. The flexed posture was created with a trunk flexion brace in healthy young adults, not measured in people with kyphosis. The flexion condition was always tested after the normal condition, with about 15 minutes between measurements. The study reported spinal segment angles, not reaching distance, balance outcomes, or ADL performance.
Declared interests
The authors declared no conflict of interest.
The easy way to misread this
Do not conclude that flexed posture in older adults with kyphosis produces the same spinal movement changes. The study tested 19 healthy young adult men in a lab, and the authors stated that age and gender effects were not addressed.